Two large boulders on both left and right of trail. Similar in appearance to an ass crack. Very good for BMX. One major problem. Do not fall! If so and you are by yourself scream till you cant scream no more. The reason for that is you will become lodged in the immence crevise beneath you. Smell is very rancid. Do not ride in rainy weather for flooding is common. Other than those precautions trail is fun!!!!